Phys. Rev. A 73, 063810 (2006) [13 pages]Polarization states of four-dimensional systems based on biphotonsReceived 17 February 2006; published 9 June 2006 We discuss the concept of polarization states of four-dimensional quantum systems based on the frequency nondegenerate biphoton field. Several quantum tomography protocols were developed and implemented for the measurement of an arbitrary state of ququart. A simple method that does not rely on the interferometric technique is used to generate and measure the sequence of states that can be used for quantum communication purposes. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.73.063810
DOI:
10.1103/PhysRevA.73.063810
PACS:
42.50.Dv, 03.67.−a
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.